From: Becky Qiang (becky.qiang@wincomsystems.com)
Date: Thu Sep 12 2002 - 23:08:19 GMT-3
Hi Peng:
I gave it a second thought and sort of figured out what you were trying to
do. I don't think it is possible to do peer with a non directly connected
BGP neighbor that belongs to another sub-AS within the same confederation.
Because in EBGP, you need the 'ebgp-multihop' clause in order to establish a
EBGP session with a non-directly connected neighbor. And I do not see an
equivelent 'ebgp-multihop' command for confederation. Maybe just try the
same clause and see what happens?
Becky
----- Original Message -----
From: "Becky Qiang" <becky.qiang@wincomsystems.com>
To: "Peng Zheng" <zpnist@yahoo.com>; <ccielab@groupstudy.com>
Sent: Thursday, September 12, 2002 6:55 PM
Subject: Re: bgp confederation peer
> Hi Peng:
>
> I don't think I understand what your question was.
>
> There are two commands associated with the BGP confederation:
> 1) bgp confederation identifier <AS#>
> 2) bgp confederation peers <sub-AS#1, sub-AS#2...sub-AS#n>
>
> If I do BGP confederation, I divide my AS in to multiple sub-ASs. And each
> sub-AS is treated like an individual system, and I configure them just
like
> how I configure IBGP(if within the same sub-AS), or EBP(if within
different
> sub-AS). The only one more thing I need to do on the router is to assign a
> real AS number on it.
>
> Maybe you are asking should you specify a neighbor's IP address which
> belongs to the same AS#, but a different sub-AS#? I don't think it's a
> normal practice. Just like in EBGP, neighbors are usually required to be
> directly connected.
>
> Becky
>
> ----- Original Message -----
> From: "Lim Meng Toon" <limmti@yahoo.com.sg>
> To: "Peng Zheng" <zpnist@yahoo.com>; <ccielab@groupstudy.com>
> Sent: Thursday, September 12, 2002 6:08 PM
> Subject: Re: bgp confederation peer
>
>
> > Hi,
> >
> > Usually you only need to peer to those routers within
> > the confederation as required and not to every peers.
> >
> > Thanks
> >
> > --- Peng Zheng <zpnist@yahoo.com> wrote: > Hi,
> > >
> > > Should I only specify AS peers which are directly
> > > connected with local router or Specify all ASs that
> > > belong to the confederation?
> > >
> > > IN CIM BGP, they specify all ASs. But I remember I
> > > saw some examples only specify ASs directly
> > > connected.
> > >
> > >
> > > Which one should be used?
> > >
> > > Thank you for help.
> > >
> > > Best Wishes,
> > > Peng Zheng
> > >
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